218156631

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 389753856

約数和(自身を除く): 171597225

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 73, 77, 119, 187, 219, 231, 357, 511, 561, 761, 803, 1241, 1309, 1533, 2283, 2409, 3723, 3927, 5327, 5621, 8371, 8687, 12937, 13651, 15981, 16863, 25113, 26061, 38811, 40953, 55553, 58597, 90559, 95557, 142307, 166659, 175791, 271677, 286671, 388871, 426921, 611083, 944401, 996149, 1166613, 1833249, 2833203, 2988447, 4277581, 6610807, 10388411, 12832743, 19832421, 31165233, 72718877, 218156631]

約数ペア:

[(1, 218156631), (3, 72718877), (7, 31165233), (11, 19832421), (17, 12832743), (21, 10388411), (33, 6610807), (51, 4277581), (73, 2988447), (77, 2833203), (119, 1833249), (187, 1166613), (219, 996149), (231, 944401), (357, 611083), (511, 426921), (561, 388871), (761, 286671), (803, 271677), (1241, 175791), (1309, 166659), (1533, 142307), (2283, 95557), (2409, 90559), (3723, 58597), (3927, 55553), (5327, 40953), (5621, 38811), (8371, 26061), (8687, 25113), (12937, 16863), (13651, 15981)]